Uneven-firing/Gas

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How do I adjust the bagwall?

Uneven-firing/Gas

If you have trouble with heat spots in your kiln, (uneven temperature distribution) causing overheating in particular areas of your kiln, and you have already acertained it is not the packing, by adjusting the shelf heights, and staggering them, you need to adjust your bagwalls. The bagwall is the firebricks that direct the flame through your kiln, usually consisting of two whole firebricks and a sloped half brick, they are moveable. If your ware is slumping on the backwall of the kiln, I would suggest widening the space between the side walls and the bagwall so the bagwall faces more in to the centre of the kiln. It is a matter of trial and error,

   

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